龋齿也叫虫牙或蛀牙，是一种最常见的口腔疾病，是牙齿硬组织脱钙后软化破坏的一种慢性病。患了龋齿会产生酸痛，影响幼儿的咀嚼功能和食欲，所以预防龋齿十分重要。在日常生活中，含糖类食物能引起龋齿是众所周知的事，但也有许多食品能够预防龋齿的发生，常见的有以下几种： Dental caries, also called insects or tooth decay, is one of the most common oral diseases and is a chronic disease of softening of tooth hard tissues after decalcification. Suffering from dental caries will produce pain, affecting young children's chewing function and appetite, so the prevention of dental decay is very important. In everyday life, sugary foods can cause dental caries is a well-known thing, but there are many foods that can prevent the occurrence of dental caries, common are the following: